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Combined Science: Biology

GCSE · Edexcel · higher

QuestionsFlashcards

Disease
Defence Against Disease
Development of Medicines
- Antibiotics
  4
- Discovery & Development of New Drugs
  6
Non-Communicable Diseases
- Lifestyle & Non-Communicable Disease
  8
- Cardiovascular Disease
  6

The Organism in the Environment
Human Influences on the Environment
- Human Impact on Biodiversity
  6
- Benefits of Maintaining Biodiversity
  6
Cycles within Ecosystems

Animal Stem Cells Flashcards

All 4 cards in this deck

What is a stem cell?: An undifferentiated (unspecialised) cell that can divide and differentiate into other types of cell.
How do embryonic stem cells produce the cells of an embryo?: They divide by mitosis, then differentiate into specialised cells.
Where are adult stem cells found in humans, and what do they do?: In tissues such as bone marrow; they divide to replace damaged or worn-out cells.
True or false? Adult stem cells can differentiate into any type of cell.: False. Adult stem cells form only a limited range of cell types (e.g. bone marrow stem cells form blood cells); embryonic stem cells can form any cell type.